MCQ
The value of $\Big[(81)^{\frac{1}{2}}\Big]^{\frac{1}{2}}$ is:
- ✓$3$
- B$9$
- C$-3$
- D$\frac{1}{3}$
✓
Answer
Correct option: A.
$3$
$\Big[(81)^{\frac{1}{2}}\Big]^{\frac{1}{2}}$
$=(3^4)^{\frac{1}{2}\times\frac{1}{2}}$
$=(3^4)^{\frac{1}{4}}$
$=3$
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